ja sehr einfach, ich Editiere meine Frage, können Sie bitte bestätigen, was ich gesagt habe, Sinn machen? danke für Sie Zeit @MeniRosenfeld: ja, genau. Ich Stimme zu, dass die Erklärung. Plus nehme ich an, dass die Informationen, die wir können wahrscheinlich Zustimmen, dass es keine Bosheit oder Missachtung beteiligt? Ich würde es hassen, verlassen Sie Gefühl, Unrecht getan, ich war einfach nur eng Adressierung alles im Rahmen des PPP (und feinere Unterklassen) ausdrücklich gebeten, über die OP, eher als eine allgemeinere form des PP. ok, bitte fügen Sie ihn zur post und Informationen hinzufügen, wie lange dauert es, um es zu knacken von Supercomputern und wie kann Quanten-Kryptographie brechen, das Zeug.

Ich habe das Lesen über die Schwachstellen von PoW crypto, und es gibt einen Teil von ihm, die ich nicht verstehe.

Angenommen, ich wollte auf der Bühne einen 51% - Angriff auf Bitcoin (nicht wirklich möglich, aber Bär mit mir). Dies würde die Wartezeit für Höhe n erreicht werden soll, und dann sofort die Zusammenarbeit mit meinen Vorgesetzten hashpower zu produzieren Blöcke in der Höhe n+1, n+2, ..., f ohne Rundfunk sagte-Blöcke an das Netzwerk. Der Einfachheit halber sagen wir, ich bin das hinzufügen von leeren Blöcke auf meine private Kette. Wenn ich Lust habe, kann ich dann broadcast-meine Kette (die ist länger als die Vertrauenswürdige Kette), die zunichte werden alle Transaktionen ab block n+1 inclusive (ist das richtig?).

Erstens, auf eine semi-low-level (D. H. in Bezug auf die tatsächlichen Daten/Datei-Operationen), wie kommt man zu halten und zu pflegen das Geheimnis Kette? Würde ich das speichern einer Sequenz von gültigen hashes für jeden block, während die übrigen vom Netzwerk getrennt?

Zweitens, wie kommt eine Sendung die größere Kette? Mein Verständnis ist, dass, wenn Sie mit dem Netzwerk verbinden und senden einen block, der auf der Höhe k, es wird abgelehnt, wenn die Haupt-Netzwerk ist schon auf block k+1 oder größer ist. Also selbst wenn ich nacheinander broadcast-meine Lösungen, würden Sie nicht abgelehnt werden, bevor es enthüllt werden, dass die Anzahl der Lösungen, die ich haben über die wichtigsten Netzwerk-Kette? Zum Beispiel, nach dem starten meines 51% Angriff nach block n zu finden ist, die wichtigsten Netzwerk irgendwann zu block n+3 , während ich heimlich auf block n+5. In Bezug auf die tatsächlichen Vorgänge, was würde ich tun müssen, um an die Stelle der Haupt-Kette?

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